Charles john mclennan



(No Model.)

G J MOLBNNAN STRAINER FOR MIXED PAINTS. No; 510,546.

Patnted Dec; 12;

Mmesses;

STATES PATENT O' rrtcn.

CHARLES JOHN MCLENNAN, OF TORONTO, CANADA.

STRAINERIFOR MIXED PAINTS.

SPECIFICATION forming part of Letters Patent No. 510,546, dated December12, 1893.

Application filed August 18, I893- Serial No. 483,486. (No model.)

To ctZZ whom it mayconcern: I

Be it known that I, CHARLES JOHN MCLEN- NAN, master painter, of the cityof Toronto, in the county of York, in the Province of Ontario, Canada,have invented certain new and useful Improvements in Strainers for MixedPaints, of which the following is a specification.

My invention relates to improvements in strainers for mixed paints, andthe object of the invention is to provide a means whereby the paint maybe effectually and quickly strained so as to remove from it all foreignmatter and reduce it to a uniform consistency, and it consistsessentially of a cylinder having a closed bottom and an open top, thecylindrical portion being formed of a wire mesh or cloth and beingdesigned to be rotated upon its base so that the centrifugal force willcause the'paint to pass through the wire cloth into an annular trough orreceptacle as hereinaf ter more particularly explained.

The drawing represents a sectional perspective View of my paintstrainer.

Heretofore it has been the custom among painters to strain the paint,which they are going to use, through a receptacle provided with a gauzeor cloth bottom. This was neoessarily very slow and it is with a view ofovercoming this slow straining of the paint and to provide means wherebyit may be as efiectually but more quickly done that my in Vention ischiefly designed.

A, is a cylindrical casing the cylindrical portion of which is comprisedof wire mesh or cloth, A. The coarseness of the mesh is regulatedaccording to the thickness of the mixed paint, which it is desired tostrain.

B, is the bottom, which has an annular groove, I), made around it belowwhich the wire mesh extends.

O, is a wire which is bound around the wire cloth so as to hold itsecurely in the groove.

D, is an inwardly and downwardly turned U-shaped rim to which is boundthe top of the wire mesh cylinder by the retaining wire, 2, whichencircles the wire mesh above the strengthening rim, (2, around thegroove, 01.

F, is an outer cylindrical casing which has an annular U-shaped troughformed around it at the bottom and is provided with a cover, G, intowhich is fitted the funnel, H.

f, is a spout extending from the bottom of the annular U-shaped trough,f.

I, is a beveled spur pinion secured to the center of the bottom, B, ofthe wire cloth cylinder. The beveled spur pinion, I, is secured on thetop of the spindle, J, which is journaled in the standard, K.

L, is a beveled spur wheel, which is secured on the spindle, Z, one endof which is journaled in the standard, K, and the other end in one ofthe supporting standards, M.

, O, is a crank handle which is secured on the end of the spindle, Z,and is designed to rotate it.

P, is a scraper, the lower end of which is revolubly secured inthecenter of the bottom, B, and the upper end of which extends and'isheld rigidly in the socket, )9. This scraper is for simplicity andcheapness made of wire but it will of course be understood that it mightbe made in the form of a brush. The scraper, P, it will be noticed ismade in the form of a spiral, the convolutions of which extend aroundand against the cylindrical wire cloth. This scraper, P, is designed tokeep the skins in mixed paint from accumulating on the wire cloth..

Having now described the principal parts involved in my invention Ishall briefly de scribe the operation. The mixed paint is poured inthrough the funnel, H, until it partially fills the wire cloth cylinder.When the handle is rotated the cylinder is caused to revolve and thepaint is caused by the centrifugal force of the rotation of the wirecloth cylinder to assume a concave form as indicated by heavy dottedlines so that it extends up on the cylindrical wire cloth. Thecentrifugal force exerted causes the paint also to rotate and have atendency to fly 0d at the periphery, which it is permitted to do throughthe wire cloth through which it drops into the annular U-shaped trough,f, from which it may be withdrawn through the spout, f.

Although I show no means except the wire cloth cylinder for efiectingthe rotation of the paint it will of course be understood that radialbeaters might be employed within the wire cloth cylinder but frompractical experience I find that the rotation of the cylinder issufficient to produce thebest results.

In constructing my trough, U, it will be necessary to have a slightdownward incline toward the spout, f. It will also be seen that onaccount of the way in which the spiral scraper is placed the handle willhave to be rotated in the direction indicated by arrow in order to keepthe skins down.

I am aware that it is not new to provide a cylindrical casing, thecylindrical portion of which is formed of a Wire cloth or similarmaterial. I am also aware that the funnel has been used to pour liquidinto the cylindrical casing and also that an annular trough with a spouthas been used to carry away the liquid in other centrifugal machines,but I do not know of any machine suitable for the straining of mixedpaint constructed in the manner described and shown and hereinafterpointed out in the claim.

It will be noticed in the construction of my centrifugal paint strainerthat the funnel, l-I,

cylindrical casing A, and trough and outer casing F, may be readilyremoved from the stand M, so that each of the separate parts may bereadily cleansed.

What I claim as my invention is The combination with the cylindricalcasing, A, having a woven wire cloth, cylindrical portion A, secured tothe bottom B, and to the U-shaped rim D, a spindle J, and socketstandard K as specified, of the spiral scraper P, located within thecylindrical casing, held securely at the top and bottom so as to hold itstationary and having its convolutions designed to press against theinterior of the woven wire cloth substantial] y as and for the purposespecified.

CHARLES JOHN MOLENNAN.

Witnesses:

F. L. MIDDLETON, WM. F. HALL.

